Formation of 2-Substituted 1,3-Diphenylindenes by an N-Bromosuccinimide Promted Dehydrocyclization of 2-Substituted 1,3,3-Triphenyl-1-propenes

Article abstract of DOI:10.1246/bcsj.59.3699

The reactions of a series of 2-substituted 1,3,3-triphenyl-1-propenes with N-bromosuccinimide (NBS) afforded the corresponding 2-substituted 1,3-diphenylindenes in moderate yields.A reaction mechanism involving a novel free-radical intramolecular ring-clo